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1. What is equilibrium?

It may be defined as a state in all changes or reactions carried in a closed vessel, where the measurable properties of the system such as colour, density, vapour pressure, concentration, temperature etc. do not show any further noticeable change.

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2. Give two examples of physical equilibrium.

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What kind of molecules in a liquid can evaporate?

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Name the factors on which vapour pressure of any liquid depends.

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Under what condition solid $rightwards harpoon over leftwards harpoon$ liquid, equilibrium can exist?

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6. Which property becomes constant in the following equilibria:

left parenthesis straight i right parenthesis space Solid space rightwards harpoon over leftwards harpoon space space Solution space equilibrium left parenthesis ii right parenthesis space Gas space rightwards harpoon over leftwards harpoon space space space Solution space equilibrium ?

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Which measurable property becomes constant in water vapour equilibrium?

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8. Give an example from daily life in which there is gas solution equilibrium?

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One Word Answers

9. A crystal of common salt of a given mass is kept in its aqueous solution. After 24 hours, its mass remains the same. Is the crystal in equilibrium with the solution?

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Short Answer Type

10. How a reversible reaction is expressed?

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